audit: type=1400 audit(1580148408.365:36): avc: denied { map } for pid=8295 comm="syz-executor303" path="/root/syz-executor303102497" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 319 Comm: kworker/u4:3 Not tainted 4.19.99-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound flush_to_ldisc RIP: 0010:do_con_write.part.0+0xa03/0x1eb0 drivers/tty/vt/vt.c:2736 Code: 76 fe ff ff 41 01 dd e8 bb 66 b4 fd 48 8b 85 a8 fe ff ff 80 38 00 0f 85 fe 12 00 00 49 8b 9e a0 03 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 14 20 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 RSP: 0018:ffff8880a921f7c0 EFLAGS: 00010203 RAX: 0000000020000001 RBX: 000000010000000e RCX: ffffffff83b6afa8 RDX: 0000000000000000 RSI: ffffffff83b6aff5 RDI: 0000000000000003 RBP: ffff8880a921f958 R08: ffff8880a920e080 R09: 0000000000000007 R10: ffffed1015d24732 R11: ffff8880ae923993 R12: dffffc0000000000 R13: 000000000000075e R14: ffff888086ca0b40 R15: ffff888086ca0ecc FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004c1af3 CR3: 000000008d08d000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_con_write drivers/tty/vt/vt.c:3121 [inline] con_put_char+0xfa/0x110 drivers/tty/vt/vt.c:3120 tty_put_char+0xc5/0x160 drivers/tty/tty_io.c:2887 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xb29/0x2ab0 drivers/tty/n_tty.c:1740 n_tty_receive_buf2+0x34/0x40 drivers/tty/n_tty.c:1775 tty_ldisc_receive_buf+0xad/0x1c0 drivers/tty/tty_buffer.c:456 tty_port_default_receive_buf+0x7d/0xb0 drivers/tty/tty_port.c:38 receive_buf drivers/tty/tty_buffer.c:476 [inline] flush_to_ldisc+0x222/0x390 drivers/tty/tty_buffer.c:528 process_one_work+0x989/0x1750 kernel/workqueue.c:2153 worker_thread+0x98/0xe40 kernel/workqueue.c:2296 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Modules linked in: ---[ end trace 172f326c0196423a ]--- RIP: 0010:do_con_write.part.0+0xa03/0x1eb0 drivers/tty/vt/vt.c:2736 Code: 76 fe ff ff 41 01 dd e8 bb 66 b4 fd 48 8b 85 a8 fe ff ff 80 38 00 0f 85 fe 12 00 00 49 8b 9e a0 03 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 14 20 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 RSP: 0018:ffff8880a921f7c0 EFLAGS: 00010203 RAX: 0000000020000001 RBX: 000000010000000e RCX: ffffffff83b6afa8 RDX: 0000000000000000 RSI: ffffffff83b6aff5 RDI: 0000000000000003 RBP: ffff8880a921f958 R08: ffff8880a920e080 R09: 0000000000000007 R10: ffffed1015d24732 R11: ffff8880ae923993 R12: dffffc0000000000 R13: 000000000000075e R14: ffff888086ca0b40 R15: ffff888086ca0ecc FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004c1af3 CR3: 000000008d08d000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400